Time-recording attachment for speedometers



0. ABEREGG AND U. KHLER.

TIME REcoRmNG ATTACHMENT TOR SPEEDOMETERS.

APPLICATION FILED OCT-1l, 19I9.

Patented oct. 19, 1920.

in .1 T. l

UNITED STATES PATENT OFFICE.

OTTO AIBEBEGG AND ULRICH KOHLER, 0F BERNE, SWITZERLAND, ASBIGNOBS T0 HASLEB A.G. VOBMALS TELEGRAPHENWEBKSTAFTE VON G. HASLEB, 0F BERNE, SWITZERLAND, A SWISS CORPORATION.

TIME-RECORDING Mmmm lnon. srnn'nomnrnns.

To all Iwhom. it may concern:

Be it known that we, O'rro Amanece and ULRICH KOHLER, both citizens of the Swiss Confederation, and residing at Berne, Switzerland, have invented certain new and useful Improvements in Time-Recordin Attachments for Specdometers, of whic the following is a specification.

The present invention has for its object a device designed for use in connection with a speedometer for diagrammatically re cording the time of day on a recording surface, such as a paper record sheet or ribbon which is fed in correspondence with the travel speed of the vehicle on which the speedometer is mounted. A well known defeet of such registering devices in which the time of da is recorded by a single stylus is the di culty of quickly and correctly reading o' the diagrams owing to the relatively restricted width of the recording surface, which is apt to lead to mistakes if the checker is not very careful and expert. For doing awa with this drawback there are provided 1n the device forming the subject of the present invention two such time recording members, both controlled from a common clock work, the one with nick feed for recording the minutes, and t e other for recording the hours on correspondingly slower feed.

Our invention will best be understood when described in detail in connection with the accompanyin drawin in which Figure 1 is a side e evation; i 2 a vertical section, and Fig. 3 a lan view partly in section of a pre erred orm of construction of our improved time recording attachment for dometers; Fig. 4 is a view of the recor sheet showing the record covering a ten hour run, the marginal references indicating the length of time the car was idle and at what time. r

Through the vertical support plate 1 extends horizontally the hour shaft 2 of a clock work, not shown here, for drivin the speedometer mechanism. On the right nd gortion of this hour shaft 2 (as vlewed 1n ig. 2) and close to the plate 1 is fixed a disk 4 provided with a drivin tooth 3. On the circumference of this d' 4 can slide the hook nose 5 of a spring iniiuenced pawl 6, which latter is fulcrumed at 26 to a disk 7 which rides idly on the hour shaft, the

Specification of Letters Patent.

Application med october 11, 1919. Serial No. 330,147.

Patented Oct. 19, 1920.

outer extremity 36 of said pawl 6 extendin somewhat beyond the periphery of the dis 7. On rotation of this driving disk 4 in clockwise direction the disk 7 will correspondingly be taken along once the hook nose has caught behind the tooth 3. A. toothed wheel 8 fixed to the disk 7 meshes with a rack 9 and on rotation shifts the rack 9 in vertically upward direction. The diameterof the wheel 8 is such that for a com lete revolution thereof the rack 9 is disp aced to an extent which corresponds exactly to the diagram width of a a )er sheet or ribbon 11 which is fed in sulta le manner above the support plate 1 longitudinally in front of a plate 10 at a velocity corresponding to the speed of travel of the vehicle.

The simultaneous recording of the minute and velocity diagrams is caused by means of the writing stylus 12 fixed to the upper end of the rack 9, and this only during the upward movement of the latter, and it recommences after each completed hour. The rack is released or tri ped in its upper end position by a pin 13 llixed in the plate l, against which the pawl end 36 strikes, which then causes the hook nose 5 to be lifted free of the tooth 3 of disk 4, so that then the couplin connection between the two disks 4 endg is broken. The rack 9 now by its own weight and also by the downward ull exerted on it by a draw sprin 14 rops vertically down, causing there y the toothed wheel 8 with the dis 7 to rotate backwardly a complete revolution, that is to say until the free end 36 of the pawl 6 again contacts with the pin 13, but at the o posite side thereof. Immediately therea er the above described operation commences a ain, the disk 7 being taken along by the isk 4 owing to the .paw nose 5 again cooperating with the driving tooth 3.

The recording of the hour diagram is effected in similar manner, with the exception that the record is not traced out but is prcked into the record sheet from the opposite face thereof. On the left hand ortion of the hour shaft 2 ride loosely the lsks 4 and 7', in construction and operation similar to the above described disks 4 and 7. To the disk 4 is xed a toothed wheel 15 and to the disk 7 a toothed wheel 8. The wheel 15 and thus also the disk 4 are revolved once in 24 hours by the clock work, and by the intermediary of the pawl 6', fulcrumed to the disk 7 this latter disk with its toothed wheel 8' will be correspondingly rotated. Secured to the shaft 2 is a gear wheel 50 meshing with a larger gear wheel 51 fixed to a shaft 52 extending parallel to shaft 2. Also fixed on shaft 52 1s a pinion 53 in mesh with the toothed wheel 15. It will be noted that shaft 52 is driven from shaft 2, but the ratio of ears 50 and 51 is such that the pinion 53 wi l rotate the. wheel 15 once for each twent four revolutions of the disk 4 effected by t e shaft 2. The rack 9 meshin with the wheel 8 is guided at its upper en which is provided with a pin or pricker 16 (Fig. 3) in a vertical slot 17 of a plate 19, which latter can be oscillated about the vertical axis 18. This plate 19 is positioned behind the plate 10 in the rear of the record sheet 11 and is normally kept in such a position by a leaf sprin29 that the pricker 16 is out of contact wit the record sheet. This slotted plate 19 is controlled in its oscillation about the axis 18 by a rock member 21 which is fuicrumed at 22 to the upper extremity of the support plate 1, extendin crosswise thereto and presenting an upwar ly directed finger 20 designed for cooperation with the lower edge of the plate 19, and a tooth 23 adapted to coperate with a projection 24 extendiliigl from the rack 9 near its upper end. is pro ection 24 strikes the rock member tooth 23 rom above on the rack 9 dropping suddenly from its upper end osition into its lower one, with the result t at the member 21 is so rocked the plate 19 with the rack 9 toward the plate 10 and the record sheet 11, causing the pricker 16 to pierce the latter. These pin ricks will be repeated every hour at a higher oint, and in connection with the line traced y the stylus 12 will clearly show the exact time of registration at any point of the diagram. Every time the rack 9' has reached its highest position, that is to say ever 24 hours, it will be tripped by the aw 6 contactin with the pin 13 and being thereby lifte free of the disk 4. The down-movement of the rack 9` is caused partly by its own weight and partly by a draw s ring 34.

As s own in Fi 3 the stylus 12 is somewhat displaced aterally relative to the pricker 16 so that it does not operate on the record sheet at the point where the latter passes in front of the slot 17 in the plate 10 through which the ricker 16 operates.

Obviously, instead of being pricked-in the hour re 'stration could also be recorded by a trace -out line, if for instance the record sheet is advanced past the rack 9 in its rear, in which case the pricker 16 would have to about its fulcrum that its finger 20 forces be replaced by a writing stylus positioned on the opposite ace of the rack, and the stylus 12 would then have to be extended to make contact with the record sheet. It would appear, however, that the difference in the registration by the two recording elements, the writing member and the pricking member, has the advantage over two writing members that the line representi the speed diagram proper is not crosse by a second line, representm mainly the hour diagram, which would ten to confuse the picture of the dia am.

at we claim is 1. The hereinbefore described speedometer attachment for recording the time of da on a record surface advanced in correspon ence with the travel speed of a vehicle, which comprises the combination of a recordin member for minute registration with quie operative feed and actuation, a recording member for hour registration with correspondingly slower operative` feed and actuation, an a common clock work for actuating both of said recording members.

2. In the hereinbefore described speedometer attachmnet for recording the time of da on a record surface advanced in correspon ence with the travel speed of a vehicle, in combination with a common clock work, two racks actuated thereby, recording elements on said racks, toothed wheels journaled on the hour shaft of said clock work and driven at diiierent velocities and respectively meshing with said racks, and means for tripping said racks in their operative upper end position for allowing them to drop back into their initial lower end position.

3. In the hereinbeforedescribed speedometer attachment, in combination with a clock work including an hour shaft, two units for recording the minutes and the hours respectively and each comprising a one-tooth drivin wheel driven from the hour shaft of sai clock work, an idle disk, a toothed wheel fast thereto, a awl coupling between said one-tooth driving wheel and said idle disk, and means for automatically uncoupling said parts at the completion of each revolution thereof, a rack meshing with said toothed wheel, a recording element on said rack, and means for aiding said rack in its down-movement on release of said awl coupling, one of said units for recor ing the minutes completing the operative cycle once every hour and the other one for recording the hours once every 24 hours.

4. In the hereinbefore described s dometer attachment in combination with a clock work including an hour shaft, two racks, recording elements on said racks, toothed wheels Journaled on said hour shaft and driven by the latter at different ve1ocities and respectively meshing with said racks, means for tripping said racks in their uppermost operative position, and means for so interdependently connecting the said racks that the one is momentarily forced toward the record surface of the speedometer upon the other one returning to its lowermost initial position.

5. In the hereinbefore described speedometer attachment, in combination two operatively associated racks, recording elements on said racks, one of said recording elements being in the form of a Writing stylus and the other in the form of a pricker, and means for feeding and recordingiy actuating said racks at different velocities.

6. In the hereinbefore described speedlometer attachment, in combination, two operatively associated racks, recording elements on said racks,means for actuating said racks at different velocities, and said two recording elements respectively operating on the recording surface of the speedometer from opposite sides.

7. In the hereinbefore described speedometer attachment, in combination wlth a clock work and a record surface operated thereby, two racks, a slotted member guiding the u per end of one of said racks, recording e ements on raid racks and the latter to be operated by said clock work at dif ferent speeds, a projection on the faster operated rack, a rock member resenting a finger and a tooth, the latter adapted to cooperate with said rack projection and said linger adapted to coperate with said slotted guide member for recordingl actuating the respective end of the guide rack on said rock member being osclllated by said rack projection on the other rack coperating with said rock member tooth.

8. In a speedometer attachment for recording the time of day on a moving record recordlng elements at opposite sides of sai record, means for traversing both of said elements acrossthe faces of said record, and means for rocking one of said elements to perforate said record.

9. In a speedometer attachment for recording the time of day on a horizontally movin record, recording elements at opposite si es of said record, means for feeding both of said elements vertically across the faces of said record, and means for rocking one of said elements toward and away from said record.

10. In a s eedometer attachment for recording the tlme of day on a moving record recordlng elements at opfosite sides of sai record, common means or advancing said elements at different speeds across the faces of said record, and means for periodicall rockin one of said elements toward an away om said record.

OTTO ABEREGG. y ULRICH KOHLER. 

